GHSA-J586-X8F6-9XF2

Vulnerability from github – Published: 2022-03-17 00:00 – Updated: 2022-03-23 00:00
VLAI?
Details

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2021-20257"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-16T15:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.",
  "id": "GHSA-j586-x8f6-9xf2",
  "modified": "2022-03-23T00:00:33Z",
  "published": "2022-03-17T00:00:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20257"
    },
    {
      "type": "WEB",
      "url": "https://github.com/qemu/qemu/commit/3de46e6fc489c52c9431a8a832ad8170a7569bd8"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2021:5238"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:0081"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-20257"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1930087"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07428.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-27"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220425-0003"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2021/02/25/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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